/*
 * Licensed to Crate.io GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate licenses
 * this file to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.sql.parser;

import org.antlr.v4.runtime.DefaultErrorStrategy;
import org.antlr.v4.runtime.Parser;
import org.antlr.v4.runtime.RecognitionException;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.misc.IntervalSet;

public class ExceptionErrorStrategy extends DefaultErrorStrategy {

    @Override
    public void recover(Parser recognizer, RecognitionException e) {
        throw e;
    }

    @Override
    protected void reportUnwantedToken(Parser recognizer) {
        if (inErrorRecoveryMode(recognizer)) {
            return;
        }

        beginErrorCondition(recognizer);

        Token t = recognizer.getCurrentToken();
        String tokenName = getTokenErrorDisplay(t);
        IntervalSet expecting = getExpectedTokens(recognizer);
        String msg = "extraneous input " + tokenName + " expecting " +
                     expecting.toString(recognizer.getVocabulary());
        msg = msg.replace("DOLLAR_QUOTED_STRING_BODY", "$<tag>$<quoted string>$<tag>$")
            .replace("END_DOLLAR_QUOTED_STRING", "closing $<tag>$ for quoted string");

        recognizer.notifyErrorListeners(t, msg, null);
    }
}
